Distributed current sources for folding ADC amplifier stages
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United States of America Patent
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Jun 26, 2007
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N/A
app pub date -
Jan 22, 2004
filing date -
Jan 22, 2004
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Abstract
A circuit for reducing the maximum magnitude of the total current on each of a plurality of buses for an amplifier stage in a folding analog to digital converter. Each amplifier stage bus couples multiple transconductance circuits to a load. Also, each of the transconductance circuits is configured to output a separate transconductance current to its respective bus. Separate current source circuits are configured to provide a separate source current locally at the output of each of the transconductance circuits such that substantially less than the full amount of each transconductance current reaches the respective bus.
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